Bike Forums

Bike Forums (https://www.bikeforums.net/forum.php)
-   Classic & Vintage (https://www.bikeforums.net/classic-vintage/)
-   -   Well, it finally happened... (https://www.bikeforums.net/classic-vintage/1176124-well-finally-happened.html)

jethin 07-05-19 10:43 AM


Originally Posted by movelo (Post 20997138)
Agreed. And...a bent fork does not have to actually fail (by breaking) to be dangerous. With insufficient rake, your front end can rather quickly develop a wicked high speed shimmy, especially if you have one hand on the bars by the stem and the other hand reaching for a water bottle, nearing bottom on a steep descent. Which is what happened to me after I collided with a big labrador.

The lab was OK but my light steel criterium fork was not. The onset of the high speed shimmy was so fast I could not regain control, and took a bad high speed tumble. OK handling at low speed does not necessarily extrapolate to high speed stability. Am now accepting Darwin Award nominations for a) riding with a bent fork and b) bad refreshment timing.

So let me get this straight. You hit a dog, which bent your fork, and then kept riding and crashed on high speed descent from shimmy? And you’re sure that 1) your fork was bent 2) the bike didn’t previously shimmy and 3) the lab was ok?

madpogue 07-05-19 10:50 AM

Another "Dog Bites Fork" story.....

Needles 07-05-19 02:33 PM

The frame was originally ordered to fit. The shop was in Fresno, and had a "semi-custom" fitment guy who got the frame with the correct length seat tube, and a somewhat shorter reach stem, as well as a couple of other bits. I have an old (since age 14) shoulder injury, so reaching out or up is a problem unless it's not very much of a reach. I also can't stay in drops for more than a half a minute or so, so flat bars work for me. The v brakes I tried to use were Zttos. They came in a kit with the levers included. They swapped out fine, I just could never get them to work for more than about a 10 mile ride. I should have sprung for Shimanos or SRAMs, I guess, but the Zttos were rated pretty high. Maybe I'll try again, at some point. My wife's Jamis has Tektros. I don't have any problems out of them with adjustment at all.

movelo 07-05-19 06:36 PM

Well, it finally happened...
 

Originally Posted by jethin (Post 21012586)
So let me get this straight. You hit a dog, which bent your fork, and then kept riding and crashed on high speed descent from shimmy? And you’re sure that 1) your fork was bent 2) the bike didn’t previously shimmy and 3) the lab was ok?


Was riding in a group at a good clip, the Lab ran out onto the road to do a quick meet-and-greet, and I managed to meet this abrupt challenge "head on". My wheel hit the dog's shoulder, he and I went down. The fork was visibly bent backwards where the blades braze into the crown. I straightened it by hand as best I could, apparently not enough or evenly enough. Could not tell you if the steerer tube was also bent, it might have been, (and might that have restricted headset movement?). The bike did not previously shimmy.

Back then (late 70's) you couldn't just google Sheldon, Jobst, or John Allen to see what to do. All we had was graduation from O'Hardknocks School, then it was on to advanced study (majoring in Trial and Error) at Fork U. oh, sorry, just couldn't resist.

Afterwards the Labrador's owner called it back to its house, but you're right, I really don't know (to this day) if the poor dog was truly all right, i.e. had no internal injuries or broken bones. But at least he seemed to run OK, no shimmy.

movelo 07-05-19 06:42 PM

Well, it finally happened...
 

Originally Posted by madpogue (Post 21012607)
Another "Dog Bites Fork" story.....

TIL: Never bring a fork to a dogfight.

Murray Missile 07-05-19 08:59 PM


Originally Posted by Needles (Post 21012941)
The v brakes I tried to use were Zttos. They came in a kit with the levers included. They swapped out fine, I just could never get them to work for more than about a 10 mile ride. I should have sprung for Shimanos or SRAMs, I guess, but the Zttos were rated pretty high. Maybe I'll try again, at some point. My wife's Jamis has Tektros. I don't have any problems out of them with adjustment at all.

I'm not familliar with Ztto's, I almost always use Shimano or Tektro V-brakes with Jagwire cables. I am currently doing a V-brake swap on a BSO I'm going to sell using Artek V-brakes. I'd never heard of them, they were on my Scott Sportster when I got it. I replaced them on the Scott with Shimano Deore XT's. The BSO had stamped steel cantis with plastic covers to make them look like aluminum. They "worked" but not all that great and one of the straddles has some broken wires. I already had the Arteks and although they are somewhat cosmetically challenged they are clearly much better brakes so why not? I didn't have levers so I ordered an inexpensive set, they just came today.

Lascauxcaveman 07-06-19 12:26 AM


Originally Posted by cudak888 (Post 20988607)
(yes, bent forks can be bent perfectly symmetrical).

This is true. And if so, the handling will seem pretty normal, compared to other bikes with similar rake on the fork. On this bike, I'm guessing that could be the case; it would have handled like a more modern, less-slack angled mountain bike.

Rollfast 07-06-19 12:58 AM


Originally Posted by t_e_r_r_y (Post 20986832)
the pictures won't load for me, but it might just be where you have them hosted and my work's firewall not getting along

You can post photos directly to BF without a host. Choose the option to upload from your 'device'.

Murray Missile 07-07-19 10:17 AM

Needles, I think you jinxed me LOL. My V-brake swap on the BSO was a failure, the mounting posts weren't strong enough for the increased leverage and no matter what I did the brakes flexed so much I couldn't get them set where the levers didn't come back against the bars. The whole bike wasn't worth the price of one brake booster much less the 2 it would have required and I didn't have any usable cantis "unworthy" enough so I stripped the bike of anything I might use and set it out on the curb along with the carcass of my first gravel bike build. May they rust in pieces......


All times are GMT -6. The time now is 03:37 PM.


Copyright © 2026 MH Sub I, LLC dba Internet Brands. All rights reserved. Use of this site indicates your consent to the Terms of Use.